| Northampton to Smyrna (Delaware) | 3,542.83 mi (5,701.64 km) |
| Northampton to Smyrna (Georgia) | 4,159.50 mi (6,694.07 km) |
| Northampton to Smyrna (Tennessee) | 4,136.30 mi (6,656.73 km) |
| Northampton to Snellville (Georgia) | 4,139.19 mi (6,661.38 km) |
| Northampton to Snoqualmie (Washington) | 4,716.28 mi (7,590.12 km) |
| Northampton to Snyder (Texas) | 4,855.31 mi (7,813.87 km) |
| Northampton to Socastee (South Carolina) | 3,944.14 mi (6,347.47 km) |
| Northampton to Socorro (Texas) | 5,109.48 mi (8,222.91 km) |
| Northampton to Soddy-Daisy (Tennessee) | 4,117.44 mi (6,626.37 km) |
| Northampton to Solana Beach (California) | 5,411.81 mi (8,709.47 km) |
| Northampton to Soledad (California) | 5,340.80 mi (8,595.19 km) |
| Northampton to Solon (Ohio) | 3,680.36 mi (5,922.97 km) |
| Northampton to Somers Point (New Jersey) | 3,501.16 mi (5,634.57 km) |
| Northampton to Somerset (Kentucky) | 4,006.50 mi (6,447.84 km) |
| Northampton to Somerset (New Jersey) | 3,443.80 mi (5,542.26 km) |
